1
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Hege CS, Stimpson A, Sefton J, Summers J, Henke H, Dundas AA, Phan T, Kinsey R, Guderian JA, Sivananthan SJ, Mohamath R, Lykins WR, Ramer-Denisoff G, Lin S, Fox CB, Irvine DJ. Screening of Oligomeric (Meth)acrylate Vaccine Adjuvants Synthesized via Catalytic Chain Transfer Polymerization. Polymers (Basel) 2023; 15:3831. [PMID: 37765685 PMCID: PMC10538096 DOI: 10.3390/polym15183831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/31/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
This report details the first systematic screening of free-radical-produced methacrylate oligomer reaction mixtures as alternative vaccine adjuvant components to replace the current benchmark compound squalene, which is unsustainably sourced from shark livers. Homo-/co-oligomer mixtures of methyl, butyl, lauryl, and stearyl methacrylate were successfully synthesized using catalytic chain transfer control, where the use of microwave heating was shown to promote propagation over chain transfer. Controlling the mixture material properties allowed the correct viscosity to be achieved, enabling the mixtures to be effectively used in vaccine formulations. Emulsions of selected oligomers stimulated comparable cytokine levels to squalene emulsion when incubated with human whole blood and elicited an antigen-specific cellular immune response when administered with an inactivated influenza vaccine, indicating the potential utility of the compounds as vaccine adjuvant components. Furthermore, the oligomers' molecular sizes were demonstrated to be large enough to enable greater emulsion stability than squalene, especially at high temperatures, but are predicted to be small enough to allow for rapid clearance from the body.
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Affiliation(s)
- Cordula S. Hege
- Centre for Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, Nottingham NG7 2RD, UK (A.A.D.)
| | - Amy Stimpson
- Centre for Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, Nottingham NG7 2RD, UK (A.A.D.)
| | - Joseph Sefton
- Centre for Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, Nottingham NG7 2RD, UK (A.A.D.)
| | - James Summers
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK
| | - Helena Henke
- Centre for Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, Nottingham NG7 2RD, UK (A.A.D.)
| | - Adam A. Dundas
- Centre for Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, Nottingham NG7 2RD, UK (A.A.D.)
| | - Tony Phan
- Access to Advanced Health Institute, Formerly Infectious Disease Research Institute, Seattle, WA 98102, USA
| | - Robert Kinsey
- Access to Advanced Health Institute, Formerly Infectious Disease Research Institute, Seattle, WA 98102, USA
| | - Jeffrey A. Guderian
- Access to Advanced Health Institute, Formerly Infectious Disease Research Institute, Seattle, WA 98102, USA
| | - Sandra J. Sivananthan
- Access to Advanced Health Institute, Formerly Infectious Disease Research Institute, Seattle, WA 98102, USA
| | - Raodoh Mohamath
- Access to Advanced Health Institute, Formerly Infectious Disease Research Institute, Seattle, WA 98102, USA
| | - William R. Lykins
- Access to Advanced Health Institute, Formerly Infectious Disease Research Institute, Seattle, WA 98102, USA
| | - Gabi Ramer-Denisoff
- Access to Advanced Health Institute, Formerly Infectious Disease Research Institute, Seattle, WA 98102, USA
| | - Susan Lin
- Access to Advanced Health Institute, Formerly Infectious Disease Research Institute, Seattle, WA 98102, USA
| | - Christopher B. Fox
- Access to Advanced Health Institute, Formerly Infectious Disease Research Institute, Seattle, WA 98102, USA
- Department of Global Health, University of Washington, Seattle, WA 98104, USA
| | - Derek J. Irvine
- Centre for Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, Nottingham NG7 2RD, UK (A.A.D.)
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2
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Wang K, Ni M, Dundas AA, Dimitrakis G, Irvine DJ. Ring opening polymerisation of ɛ-caprolactone with novel microwave magnetic heating and cyto-compatible catalyst. Front Bioeng Biotechnol 2023; 11:1123477. [PMID: 36860884 PMCID: PMC9968877 DOI: 10.3389/fbioe.2023.1123477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 01/19/2023] [Indexed: 02/17/2023] Open
Abstract
We report on the ring-opening polymerization of ɛ-caprolactone incorporated with a magnetic susceptible catalyst, FeCl3, via the use of microwave magnetic heating (HH) which primarily heats the bulk with a magnetic field (H-field) from an electromagnetic field (EMF). Such a process was compared to more commonly used heating methods, such as conventional heating (CH), i.e., oil bath, and microwave electric heating (EH), which is also referred to as microwave heating that primarily heats the bulk with an electric field (E-field). We identified that the catalyst is susceptible to both the E-field and H-field heating, and promoted the heating of the bulk. Which, we noticed such promotion was a lot more significant in the HH heating experiment. Further investigating the impact of such observed effects in the ROP of ɛ-caprolactone, we found that the HH experiments showed a more significant improvement in both the product Mwt and yield as the input power increased. However, when the catalyst concentration was reduced from 400:1 to 1600:1 (Monomer:Catalyst molar ratio), the observed differentiation in the Mwt and yield between the EH and the HH heating methods diminished, which we hypothesized to be due to the limited species available that were susceptible to microwave magnetic heating. But comparable product results between the HH and EH heating methods suggest that the HH heating method along with a magnetic susceptible catalyst could be an alternative solution to overcome the penetration depth problem associated with the EH heating methods. The cytotoxicity of the produced polymer was investigated to identify its potential application as biomaterials.
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Affiliation(s)
- Kaiyang Wang
- Shanghai Engineering Technology Research Center for Pharmaceutical Intelligent Equipment, Shanghai Frontiers Science Center for Druggability of Cardiovascular Non-Coding RNA, Institute for Frontier Medical Technology, Shanghai University of Engineering Science, Shanghai, China
| | - Ming Ni
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,*Correspondence: Derek J. Irvine, ; Ming Ni,
| | - Adam A. Dundas
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham, United Kingdom
| | - Georgios Dimitrakis
- George Green Institute for Electromagnetics Research, Faculty of Engineering, University of Nottingham, Nottingham, United Kingdom
| | - Derek J. Irvine
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham, United Kingdom,*Correspondence: Derek J. Irvine, ; Ming Ni,
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3
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Cuzzucoli Crucitti V, Ilchev A, Moore JC, Fowler HR, Dubern JF, Sanni O, Xue X, Husband BK, Dundas AA, Smith S, Wildman JL, Taresco V, Williams P, Alexander MR, Howdle SM, Wildman RD, Stockman RA, Irvine DJ. Predictive Molecular Design and Structure-Property Validation of Novel Terpene-Based, Sustainably Sourced Bacterial Biofilm-Resistant Materials. Biomacromolecules 2023; 24:576-591. [PMID: 36599074 PMCID: PMC9930090 DOI: 10.1021/acs.biomac.2c00721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Presented in this work is the use of a molecular descriptor, termed the α parameter, to aid in the design of a series of novel, terpene-based, and sustainable polymers that were resistant to biofilm formation by the model bacterial pathogen Pseudomonas aeruginosa. To achieve this, the potential of a range of recently reported, terpene-derived monomers to deliver biofilm resistance when polymerized was both predicted and ranked by the application of the α parameter to key features in their molecular structures. These monomers were derived from commercially available terpenes (i.e., α-pinene, β-pinene, and carvone), and the prediction of the biofilm resistance properties of the resultant novel (meth)acrylate polymers was confirmed using a combination of high-throughput polymerization screening (in a microarray format) and in vitro testing. Furthermore, monomers, which both exhibited the highest predicted biofilm anti-biofilm behavior and required less than two synthetic stages to be generated, were scaled-up and successfully printed using an inkjet "valve-based" 3D printer. Also, these materials were used to produce polymeric surfactants that were successfully used in microfluidic processing to create microparticles that possessed bio-instructive surfaces. As part of the up-scaling process, a novel rearrangement was observed in a proposed single-step synthesis of α-terpinyl methacrylate via methacryloxylation, which resulted in isolation of an isobornyl-bornyl methacrylate monomer mixture, and the resultant copolymer was also shown to be bacterial attachment-resistant. As there has been great interest in the current literature upon the adoption of these novel terpene-based polymers as green replacements for petrochemical-derived plastics, these observations have significant potential to produce new bio-resistant coatings, packaging materials, fibers, medical devices, etc.
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Affiliation(s)
- Valentina Cuzzucoli Crucitti
- Centre of Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Aleksandar Ilchev
- Centre of Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Jonathan C Moore
- School of Chemistry, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Harriet R Fowler
- School of Chemistry, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Jean-Frédéric Dubern
- National Biofilms Innovation Centre, Biodiscovery Institute and School of Life Sciences, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Olutoba Sanni
- Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Xuan Xue
- Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Bethany K Husband
- Centre of Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Adam A Dundas
- Centre of Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Sean Smith
- School of Chemistry, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Joni L Wildman
- Centre of Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Vincenzo Taresco
- School of Chemistry, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Paul Williams
- National Biofilms Innovation Centre, Biodiscovery Institute and School of Life Sciences, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Morgan R Alexander
- Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Steven M Howdle
- School of Chemistry, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Ricky D Wildman
- Centre of Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Robert A Stockman
- School of Chemistry, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
| | - Derek J Irvine
- Centre of Additive Manufacturing, Department of Chemical and Environmental Engineering, University of Nottingham, University Park, NottinghamNG7 2RD, U.K
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4
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Dubern JF, Hook AL, Carabelli AM, Chang CY, Lewis-Lloyd CA, Luckett JC, Burroughs L, Dundas AA, Humes DJ, Irvine DJ, Alexander MR, Williams P. Discovery of a polymer resistant to bacterial biofilm, swarming, and encrustation. Sci Adv 2023; 9:eadd7474. [PMID: 36696507 PMCID: PMC9876547 DOI: 10.1126/sciadv.add7474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Innovative approaches to prevent catheter-associated urinary tract infections (CAUTIs) are urgently required. Here, we describe the discovery of an acrylate copolymer capable of resisting single- and multispecies bacterial biofilm formation, swarming, encrustation, and host protein deposition, which are major challenges associated with preventing CAUTIs. After screening ~400 acrylate polymers, poly(tert-butyl cyclohexyl acrylate) was selected for its biofilm- and encrustation-resistant properties. When combined with the swarming inhibitory poly(2-hydroxy-3-phenoxypropyl acrylate), the copolymer retained the bioinstructive properties of the respective homopolymers when challenged with Proteus mirabilis, Pseudomonas aeruginosa, Staphylococcus aureus, and Escherichia coli. Urinary tract catheterization causes the release of host proteins that are exploited by pathogens to colonize catheters. After preconditioning the copolymer with urine collected from patients before and after catheterization, reduced host fibrinogen deposition was observed, and resistance to diverse uropathogens was maintained. These data highlight the potential of the copolymer as a urinary catheter coating for preventing CAUTIs.
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Affiliation(s)
- Jean-Frédéric Dubern
- National Biofilms Innovation Centre, University of Nottingham Biodiscovery Institute, School of Life Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Andrew L. Hook
- Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Alessandro M. Carabelli
- National Biofilms Innovation Centre, University of Nottingham Biodiscovery Institute, School of Life Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
- Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Chien-Yi Chang
- National Biofilms Innovation Centre, University of Nottingham Biodiscovery Institute, School of Life Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Christopher A. Lewis-Lloyd
- Division of Gastrointestinal Surgery, Nottingham Digestive Diseases Centre NIHR Biomedical Research Unit, University of Nottingham and Nottingham University Hospitals NHS Trust, School of Medicine, Queen’s Medical Centre, Nottingham NG7 2UH, UK
| | - Jeni C. Luckett
- National Biofilms Innovation Centre, University of Nottingham Biodiscovery Institute, School of Life Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Laurence Burroughs
- Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Adam A. Dundas
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - David J. Humes
- Division of Gastrointestinal Surgery, Nottingham Digestive Diseases Centre NIHR Biomedical Research Unit, University of Nottingham and Nottingham University Hospitals NHS Trust, School of Medicine, Queen’s Medical Centre, Nottingham NG7 2UH, UK
| | - Derek J. Irvine
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Morgan R. Alexander
- Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Paul Williams
- National Biofilms Innovation Centre, University of Nottingham Biodiscovery Institute, School of Life Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
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5
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Latif A, Fisher LE, Dundas AA, Cuzzucoli Crucitti V, Imir Z, Lawler K, Pappalardo F, Muir BW, Wildman R, Irvine DJ, Alexander MR, Ghaemmaghami AM. Microparticles Decorated with Cell-Instructive Surface Chemistries Actively Promote Wound Healing. Adv Mater 2022:e2208364. [PMID: 36440539 DOI: 10.1002/adma.202208364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/16/2022] [Indexed: 06/16/2023]
Abstract
Wound healing is a complex biological process involving close crosstalk between various cell types. Dysregulation in any of these processes, such as in diabetic wounds, results in chronic nonhealing wounds. Fibroblasts are a critical cell type involved in the formation of granulation tissue, essential for effective wound healing. 315 different polymer surfaces are screened to identify candidates which actively drive fibroblasts toward either pro- or antiproliferative functional phenotypes. Fibroblast-instructive chemistries are identified, which are synthesized into surfactants to fabricate easy to administer microparticles for direct application to diabetic wounds. The pro-proliferative microfluidic derived particles are able to successfully promote neovascularization, granulation tissue formation, and wound closure after a single application to the wound bed. These active novel bio-instructive microparticles show great potential as a route to reducing the burden of chronic wounds.
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Affiliation(s)
- Arsalan Latif
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Leanne E Fisher
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Adam A Dundas
- Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| | | | - Zeynep Imir
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Karen Lawler
- School of Life Sciences, University of Nottingham, Nottingham, NG7 2RD, UK
| | | | - Benjamin W Muir
- Commonwealth Scientific & Industrial Research Organization, Canberra ACT 2601, Australia
| | - Ricky Wildman
- Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Derek J Irvine
- Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
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6
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Cuzzucoli Crucitti V, Contreas L, Taresco V, Howard SC, Dundas AA, Limo MJ, Nisisako T, Williams PM, Williams P, Alexander MR, Wildman RD, Muir BW, Irvine DJ. Generation and Characterization of a Library of Novel Biologically Active Functional Surfactants (Surfmers) Using Combined High-Throughput Methods. ACS Appl Mater Interfaces 2021; 13:43290-43300. [PMID: 34464079 DOI: 10.1021/acsami.1c08662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We report the first successful combination of three distinct high-throughput techniques to deliver the accelerated design, synthesis, and property screening of a library of novel, bio-instructive, polymeric, comb-graft surfactants. These three-dimensional, surface-active materials were successfully used to control the surface properties of particles by forming a unimolecular deep layer on the surface of the particles via microfluidic processing. This strategy deliberately utilizes the surfactant to both create the stable particles and deliver a desired cell-instructive behavior. Therefore, these specifically designed, highly functional surfactants are critical to promoting a desired cell response. This library contained surfactants constructed from 20 molecularly distinct (meth)acrylic monomers, which had been pre-identified by HT screening to exhibit specific, varied, and desirable bacterial biofilm inhibitory responses. The surfactant's self-assembly properties in water were assessed by developing a novel, fully automated, HT method to determine the critical aggregation concentration. These values were used as the input data to a computational-based evaluation of the key molecular descriptors that dictated aggregation behavior. Thus, this combination of HT techniques facilitated the rapid design, generation, and evaluation of further novel, highly functional, cell-instructive surfaces by application of designed surfactants possessing complex molecular architectures.
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Affiliation(s)
- Valentina Cuzzucoli Crucitti
- Centre for Additive Manufacturing and Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD U.K
| | - Leonardo Contreas
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD U.K
| | - Vincenzo Taresco
- School of Chemistry, University of Nottingham, Nottingham, NG7 2RD U.K
| | | | - Adam A Dundas
- Centre for Additive Manufacturing and Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD U.K
| | - Marion J Limo
- Interface and Surface Analysis Centre, University of Nottingham, Nottingham, NG7 2RD U.K
| | - Takasi Nisisako
- Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan
| | - Philip M Williams
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD U.K
| | - Paul Williams
- Biodiscovery Institute, National Biofilms Innovation Centre and School of Life Sciences, University of Nottingham, Nottingham, NG7 2RD U.K
| | | | - Ricky D Wildman
- Centre for Additive Manufacturing and Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD U.K
| | | | - Derek J Irvine
- Centre for Additive Manufacturing and Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD U.K
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7
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Dundas AA, Kern S, Cuzzucoli Crucitti V, Scurr DJ, Wildman R, Irvine DJ, Alexander MR. A new particle mounting method for surface analysis. SURF INTERFACE ANAL 2021. [DOI: 10.1002/sia.7010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Adam A. Dundas
- Centre for Additive Manufacturing, Department of Chemical and Environmental Engineering, Faculty of Engineering University of Nottingham Nottingham UK
- Advanced Materials and Healthcare Technologies, School of Pharmacy University of Nottingham Nottingham UK
| | - Stefanie Kern
- Advanced Materials and Healthcare Technologies, School of Pharmacy University of Nottingham Nottingham UK
| | - Valentina Cuzzucoli Crucitti
- Centre for Additive Manufacturing, Department of Chemical and Environmental Engineering, Faculty of Engineering University of Nottingham Nottingham UK
| | - David J. Scurr
- Advanced Materials and Healthcare Technologies, School of Pharmacy University of Nottingham Nottingham UK
| | - Ricky Wildman
- Centre for Additive Manufacturing, Department of Chemical and Environmental Engineering, Faculty of Engineering University of Nottingham Nottingham UK
| | - Derek J. Irvine
- Centre for Additive Manufacturing, Department of Chemical and Environmental Engineering, Faculty of Engineering University of Nottingham Nottingham UK
| | - Morgan R. Alexander
- Advanced Materials and Healthcare Technologies, School of Pharmacy University of Nottingham Nottingham UK
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8
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Henshaw CA, Dundas AA, Cuzzucoli Crucitti V, Alexander MR, Wildman R, Rose FRAJ, Irvine DJ, Williams PM. Droplet Microfluidic Optimisation Using Micropipette Characterisation of Bio-Instructive Polymeric Surfactants. Molecules 2021; 26:3302. [PMID: 34072733 PMCID: PMC8197901 DOI: 10.3390/molecules26113302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/25/2021] [Accepted: 05/27/2021] [Indexed: 11/24/2022] Open
Abstract
Droplet microfluidics can produce highly tailored microparticles whilst retaining monodispersity. However, these systems often require lengthy optimisation, commonly based on a trial-and-error approach, particularly when using bio-instructive, polymeric surfactants. Here, micropipette manipulation methods were used to optimise the concentration of bespoke polymeric surfactants to produce biodegradable (poly(d,l-lactic acid) (PDLLA)) microparticles with unique, bio-instructive surface chemistries. The effect of these three-dimensional surfactants on the interfacial tension of the system was analysed. It was determined that to provide adequate stabilisation, a low level (0.1% (w/v)) of poly(vinyl acetate-co-alcohol) (PVA) was required. Optimisation of the PVA concentration was informed by micropipette manipulation. As a result, successful, monodisperse particles were produced that maintained the desired bio-instructive surface chemistry.
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Affiliation(s)
- Charlotte A. Henshaw
- Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK;
- Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK; (A.A.D.); (M.R.A.)
| | - Adam A. Dundas
- Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK; (A.A.D.); (M.R.A.)
- Centre for Additive Manufacturing, Department for Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK; (V.C.C.); (R.W.)
| | - Valentina Cuzzucoli Crucitti
- Centre for Additive Manufacturing, Department for Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK; (V.C.C.); (R.W.)
| | - Morgan R. Alexander
- Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK; (A.A.D.); (M.R.A.)
| | - Ricky Wildman
- Centre for Additive Manufacturing, Department for Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK; (V.C.C.); (R.W.)
| | - Felicity R. A. J. Rose
- Regenerative Medicine and Cellular Therapies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK;
| | - Derek J. Irvine
- Centre for Additive Manufacturing, Department for Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK; (V.C.C.); (R.W.)
| | - Philip M. Williams
- Molecular Therapeutics and Formulation, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK;
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9
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Dundas AA, Sanni O, Dubern JF, Dimitrakis G, Hook AL, Irvine DJ, Alexander PW, Alexander MR. Validating a Predictive Structure-Property Relationship by Discovery of Novel Polymers which Reduce Bacterial Biofilm Formation. Adv Mater 2019; 31:e1903513. [PMID: 31583791 PMCID: PMC7613244 DOI: 10.1002/adma.201903513] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 08/26/2019] [Indexed: 05/29/2023]
Abstract
Synthetic materials are an everyday component of modern healthcare yet often fail routinely as a consequence of medical-device-centered infections. The incidence rate for catheter-associated urinary tract infections is between 3% and 7% for each day of use, which means that infection is inevitable when resident for sufficient time. The O'Neill Review on antimicrobial resistance estimates that, left unchecked, ten million people will die annually from drug-resistant infections by 2050. Development of biomaterials resistant to bacterial colonization can play an important role in reducing device-associated infections. However, rational design of new biomaterials is hindered by the lack of quantitative structure-activity relationships (QSARs). Here, the development of a predictive QSAR is reported for bacterial biofilm formation on a range of polymers, using calculated molecular descriptors of monomer units to discover and exemplify novel, biofilm-resistant (meth-)acrylate-based polymers. These predictions are validated successfully by the synthesis of new monomers which are polymerized to create coatings found to be resistant to biofilm formation by six different bacterial pathogens: Pseudomonas aeruginosa, Proteus mirabilis, Enterococcus faecalis, Klebsiella pneumoniae, Escherichia coli, and Staphylococcus aureus.
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Affiliation(s)
- Adam A. Dundas
- Advanced Medical and Healthcare Technologies School of Pharmacy University of Nottingham Nottingham NG7 2RD, UK
| | - Olutoba Sanni
- Advanced Medical and Healthcare Technologies School of Pharmacy University of Nottingham Nottingham NG7 2RD, UK
- Department of Chemical and Environmental Engineering Faculty of Engineering University of Nottingham Nottingham NG7 2RD, UK
| | - Jean-Frédéric Dubern
- Centre of Biomolecular Sciences School of Life Sciences University of Nottingham Nottingham NG7 2RD, UK
| | - Georgios Dimitrakis
- Department of Chemical and Environmental Engineering Faculty of Engineering University of Nottingham Nottingham NG7 2RD, UK
| | - Andrew L. Hook
- Advanced Medical and Healthcare Technologies School of Pharmacy University of Nottingham Nottingham NG7 2RD, UK
| | - Derek J. Irvine
- Department of Chemical and Environmental Engineering Faculty of Engineering University of Nottingham Nottingham NG7 2RD, UK
| | - Paul Williams Alexander
- Centre of Biomolecular Sciences School of Life Sciences University of Nottingham Nottingham NG7 2RD, UK
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10
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Dundas AA, Hook AL, Alexander MR, Kingman SW, Dimitrakis G, Irvine DJ. Methodology for the synthesis of methacrylate monomers using designed single mode microwave applicators. REACT CHEM ENG 2019. [DOI: 10.1039/c9re00173e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A novel single-well prototype high throughput microwave reactor geometry has been produced and shown to be capable of synthesizing an array of non-commercially available methacrylate monomers.
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Affiliation(s)
- Adam A. Dundas
- Department of Chemical and Environmental Engineering
- Faculty of Engineering
- University of Nottingham
- UK
- Advanced Materials and Healthcare Technologies
| | - Andrew L. Hook
- Advanced Materials and Healthcare Technologies
- School of Pharmacy
- University of Nottingham
- UK
| | - Morgan R. Alexander
- Advanced Materials and Healthcare Technologies
- School of Pharmacy
- University of Nottingham
- UK
| | - Samuel W. Kingman
- Department of Chemical and Environmental Engineering
- Faculty of Engineering
- University of Nottingham
- UK
| | - Georgios Dimitrakis
- Department of Chemical and Environmental Engineering
- Faculty of Engineering
- University of Nottingham
- UK
| | - Derek J. Irvine
- Department of Chemical and Environmental Engineering
- Faculty of Engineering
- University of Nottingham
- UK
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Mikulskis P, Hook A, Dundas AA, Irvine D, Sanni O, Anderson D, Langer R, Alexander MR, Williams P, Winkler DA. Prediction of Broad-Spectrum Pathogen Attachment to Coating Materials for Biomedical Devices. ACS Appl Mater Interfaces 2018; 10:139-149. [PMID: 29191009 PMCID: PMC7613461 DOI: 10.1021/acsami.7b14197] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Bacterial infections in healthcare settings are a frequent accompaniment to both routine procedures such as catheterization and surgical site interventions. Their impact is becoming even more marked as the numbers of medical devices that are used to manage chronic health conditions and improve quality of life increases. The resistance of pathogens to multiple antibiotics is also increasing, adding an additional layer of complexity to the problems of employing safe and effective medical procedures. One approach to reducing the rate of infections associated with implanted and indwelling medical devices is the use of polymers that resist the formation of bacterial biofilms. To significantly accelerate the discovery of such materials, we show how state of the art machine learning methods can generate quantitative predictions for the attachment of multiple pathogens to a large library of polymers in a single model for the first time. Such models facilitate design of polymers with very low pathogen attachment across different bacterial species that will be candidate materials for implantable or indwelling medical devices such as urinary catheters, cochlear implants, and pacemakers.
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Affiliation(s)
- Paulius Mikulskis
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Andrew Hook
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Adam A. Dundas
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
- Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Derek Irvine
- Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Olutoba Sanni
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Daniel Anderson
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, Massachusetts 02139-4307, United States
| | - Robert Langer
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, Massachusetts 02139-4307, United States
| | - Morgan R. Alexander
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
- Corresponding Authors; ;
| | - Paul Williams
- Centre for Biomolecular Sciences, School of Life Sciences, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - David A. Winkler
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Kingsbury Drive, Melbourne, Victoria 3086, Australia
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- School of Chemical and Physical Sciences, Flinders University, Bedford Park, South Australia 5046, Australia
- Corresponding Authors; ;
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